Thank you for your letter inquiring about my membership. I did not renew it because I can not live with the statement below:

Emissions of greenhouse gases from human activities are changing the atmosphere in ways that affect the Earth's climate. Greenhouse gases include carbon dioxide as well as methane, nitrous oxide and other gases. They are emitted from fossil fuel combustion and a range of industrial and agricultural processes.

The evidence is incontrovertible: Global warming is occurring. If no mitigating actions are taken, significant disruptions in the Earth's physical and ecological systems, social systems, security and human health are likely to occur. We must reduce emissions of greenhouse gases beginning now.

In the APS it is ok to discuss whether the mass of the proton changes over time and how a multi-universe behaves, but the evidence of global warming is incontrovertible? The claim (how can you measure the average temperature of the whole earth for a whole year?) is that the temperature has changed from ~288.0 to ~288.8 degree Kelvin in about 150 years, which (if true) means to me is that the temperature has been amazingly stable, and both human health and happiness have definitely improved in this 'warming' period.

Best regards,

Ivar Giaever

Nobel Laureate 1973

PS. I included a copy to a few people in case they feel like using the information.

Ivar Giaever XXX XXX XXX USA Phone XXX XXX XXX Fax XXX XXX XXX

According to the Wall Street Journal, Giaever announced he was an avid global warming skeptic in 2008, saying that global warming was "becoming a religion."

"I am Norwegian, should I really worry about a little bit of warming?," said Giaever in 2008. "I am unfortunately becoming an old man. We have heard many similar warnings about the acid rain 30 years ago and the ozone hole 10 years ago or deforestation but the humanity is still around. The ozone hole width has peaked in 1993. Moreover, global warming has become a new religion. We frequently hear about the number of scientists who support it. But the number is not important: only whether they are correct is important. We don't really know what the actual effect on the global temperature is. There are better ways to spend the money."

Giaever, who earned his Nobel Prize for his experimental discoveries with tunneling phenomena in superconductors, joined more than 100 signers of a letter to U.S. President Barack Obama criticizing his position on climate change in 2009.

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Which is false because you can't be 100% sure you're actually alive. You, I, and reality may just be a simulation run on some grand computer. Maybe we've had this debate countless times before when the simulation was restarted from a save point, but we only remember the current iteration.